Barclays is warning investors to brace for another middling quarter of earnings from the biggest...

Barclays is warning investors to brace for another middling quarter of earnings from the biggest energy names. The firm tabs Exxon (XOM), where a heavy schedule of planned and unplanned outages have resulted in a ~$400M opportunity cost loss, and Alon USA Energy (ALJ), hit by unplanned repairs at its Krotz Springs, La., refinery, as the biggest downside surprises.